Monday, November 16, 2009

Late Afternoon/Evening Showers, Warm

The dry streak ends today as a storm system approaches from the west. A line of showers and thunderstorms currently stretches from southeast Texas to southeast Missouri in advance of a cold front. Surface ridging in the Gulf of Mexico has prevented a strong return flow into this system, and this is resulting in minimal cloud cover in advance of the front. As a result, we should see mostly sunny skies this morning, but clouds will thicken more as we head throughout the afternoon hours. This should allow temperatures to top out around 72 this afternoon. The front will steadily push eastward today and should be located across western Mississippi by late this afternoon. At the same time, the upper level energy will become cut off from the jet stream. This combined with meager moisture ahead of the front will actually result in the line of showers weakening substantially over the course of the day. However, we will likely see the line push through our area after 4 p.m. and should exit to the east by 7 p.m. Rainfall amounts will be light with most communities seeing less than 0.25". The front will pass through our area after 8 p.m. with temperatures quickly dropping into the 50s by 10 p.m. Clouds will hang tough overnight, but strong cold air advection will allow temperatures to drop near 42 tomorrow morning.

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